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- W2366704498 abstract "Polystyrene-block-poly(ethyl methacrylate)(PS-b-PEA)was synthesized using living free radical homo-and co-polymerization in the presence of 4-hydroxyl-2,2,6,6-tetramethylpiperridine-oxyl-1(HTEMPO~·)and azobisisobutyronitrile(AIBN).The synthesized polystyrene and diblock copolymers were characterized by gel permeation chromatography(GPC)and fourier transform infrared spectroscopy.Experimental results showed that polystyrene was obtained by polymerization of styrene in the presence of 4-hydroxyl-2,2,6,6-tetramethylpiperridine-oxyl-1(HTEMPO~·)and azobisisobutyronitrile(AIBN)with molecular polydispersity in the range of 1.18 to 1.2 and the number average of molecular weight in the range of(7?200) to 69?300?g/mol,the HTEMPO~· protected polystyrene can initiate the living free radical polymerization of ethyl methacrylate to form the polystyrene-block-poly(ethyl methacrylate)with molecular polydispersity in the range of 1.22 to 1.26 and the number average of molecular weight in the range of(57?800) to 107?800?g/mol,the peaks at 1?158?cm~(-1) and 1?727?cm~(-1) of FTIR showed the copolymer structure is polystyrene-block-poly(ethyl methacrylate)." @default.
- W2366704498 created "2016-06-24" @default.
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- W2366704498 date "2005-01-01" @default.
- W2366704498 modified "2023-09-26" @default.
- W2366704498 title "The synthesis and characterization of diblock copolymer PS-b-PEA" @default.
- W2366704498 hasPublicationYear "2005" @default.
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